Memory Game The Endocrine SystemOnline version Review the organs of the endocrine system and their functions. by Kathy Dilliplane Regulates the female reproductive system Pituitary Pineal Gland Adrenal Glands Testes Regulates calcium levels in the blood. Pancreas Regulates growth and metabolism Parathyroid Glands Regulates blood sugar levels Regulate the male reproductive system Produces melatonin to regulate sleep cycles Thyroid Increase heart rate during a "Fight or Flight" response Ovaries Thymus Helps the immune system recognize and fight pathogens The body's "Master Gland" that controls the other endocrine organs.